Finding the Fourth Proportional to 12,901.59, 17,802.93 and 7,236.57

Step by Step Solution

1. Step 1: Write the proportion equation
   12,901.59 : 17,802.93 = 7,236.57 : x
2. Step 2: Convert to fraction form
   12,901.59/17,802.93 = 7,236.57/x
3. Step 3: Cross multiply
   12,901.59x = 17,802.93 × 7,236.57
4. Step 4: Simplify right side
   12,901.59x = 128,832,149.15
5. Step 5: Solve for x
   x = 128,832,149.15/12,901.59
6. Step 6: Final answer
   x = 9,985.76